1987 injection pump problem
Thread Starter
|
New User
Joined: May 2019
Posts: 4
Likes: 0
1987 injection pump problem
Truck starts and runs cold. Once truck is warm and I try to drive it dies like it’s starving for fuel. Truck has a new electric fuel pump, and maintains good pressure through fuel filter at motor. Fuel pump is wired to the 12v constant for the injection pump, an ideas on what might be causing the fuel starving?
Posting Guru
Joined: May 2015
Posts: 2,036
Likes: 5
It could be the fuel shut off solenoid, when it dies how long does it take before it starts?
If it takes a while crack an injector line when you crank and see if its pushing any fuel, it should be a good squirt. If no fuel is coming out either you're getting air in the system or the shutoff solenoid is failing when warm. Which is pretty normal for electronics to do funky things when hot.
You could also try the cool NOT COLD water trick and pour it on the rear of the ip and see if it fires up. When the main rotor wears out they normally give trouble starting hot.
If it takes a while crack an injector line when you crank and see if its pushing any fuel, it should be a good squirt. If no fuel is coming out either you're getting air in the system or the shutoff solenoid is failing when warm. Which is pretty normal for electronics to do funky things when hot.
You could also try the cool NOT COLD water trick and pour it on the rear of the ip and see if it fires up. When the main rotor wears out they normally give trouble starting hot.
i ain't rite
Joined: Mar 2005
Posts: 65,565
Likes: 5,601
From: Marlboro Mental Hospital.
there could also be crud in the fuel tank blocking the pickup. then when the engine dies, it falls down only to get sucked back up once engine is restarted and you start driving again.
Thread Starter
|
New User
Joined: May 2019
Posts: 4
Likes: 0
Tanks were pulled and cleaned in the rehab process. New online and primary filter at the motor. Leaning toward an electrical problem with the ip.
Scope Wizard
Joined: May 2019
Posts: 6,530
Likes: 25
does the 87 still have the Rubber flex plate holding the governor weights ??
bad governor can cause the issue you have, I haven't rebuilt any injection pumps since the early 80's
we used to pull the return check valve off the pump and look for contamination to discover this issue.
Just a guess
bad governor can cause the issue you have, I haven't rebuilt any injection pumps since the early 80's
we used to pull the return check valve off the pump and look for contamination to discover this issue.
Just a guess
Thread
Thread Starter
Forum
Replies
Last Post
phathom
Fuel Injection, Carburetion & Fuel System
3
Jun 11, 2014 09:44 PM
